... fibroblasts The pro-inflammatory cytokines TNFα and IL1β further activated pFAK, pPyk2 and pSrc expression up to 120 The activation of the FAK- Src-paxillin-PLCγ pathway in RA ST lining and sublining ... together, our results demonstrate that FAK family kinases, including FAK and Pyk2, and their associated signaling intermediates, namely Src, paxillin and PLCγ are phosphorylated in RA ST lining and ... experiments Inflam, inflammatory score; Vasc, vascularity score; Lining, ST lining cell layer; Mac, subsynovial MΦs immunostaining in OA and ND STs The relative pattern of pFAK and pPyk2 expression...